Man from Atlantis IV: The Disappearances

Patrick Duffy

Mark Harris

Belinda Montgomery

Dr. Elizabeth Merrill

Kenneth Tigar

Dr. Miller Simon

Alan Fudge

C.W. Crawford

Darleen Carr

Dr. Mary Smith

Dennis Redfield

Dick Stoneman

Pamela Peters Solow

Jane

Fred Beir

Captain Bracy

Paul Mantee

FBI Agent Fuller

Michael J. London

Cetacean Crewman

Arthur Batanides

Police Detective

Rick Goldman

Security Guard at Dock